Title :
One- and two-stage spatial amplifiers
Author :
Ivanov, Toni ; Balasubramaniyan, Arul ; Mortazawi, Amir
Author_Institution :
Dept. of Electr. & Comput. Eng., Central Florida Univ., Orlando, FL, USA
fDate :
9/1/1995 12:00:00 AM
Abstract :
This paper reports the design of nine HEMT, one- and two-stage spatial amplifiers which employ a common ground plane for receiving and transmitting port isolation and for heat sinking. By placing the spatial amplifier array in the near-field of the transmitting and receiving horns, a net gain of 8 dB was obtained. This paper also reports the first demonstration of a two-stage spatial amplifier constructed by employing near-field coupling of two single stage spatial amplifiers in free space
Keywords :
HEMT circuits; millimetre wave amplifiers; 8 dB; HEMT amplifiers; ground plane; heat sinking; near-field coupling; one-stage amplifiers; port isolation; quasi-optical amplifiers; receiving horns; spatial amplifier array; transmitting horns; two-stage amplifiers; Broadband amplifiers; Coupling circuits; Electromagnetic waveguides; Frequency; Gain; HEMTs; Heat sinks; Narrowband; Power amplifiers; Solid state circuits;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
